I couldn't help _____ when I heard the joke.
| A．being laughed | B．laughing | C．to be laughing | D．to laugh |
------- What is the price of petrol these days
-------Oh, itsharply since last month.
| A． | is raised | B． | has risen | C． | has arisen | D． | is increased |
At present, one of the apartments in favor of the new airport ________ that it will going a lot jobs to the area. 
| A．is | B．are | C．will be | D．were |
It was _____ he came bank from Africa that wear _________ he met the girl he would like to marry. 
| A．when; then | B．not; until | C．not until; that | D．only; when |
The house I grew up ________ has been taken down and replaced by an office building. 
| A．in it | B．in | C．in that | D．in which |
Some people fear that ________ air pollution may bring about changes in _______ weather around the world.（）
| A． |
/; the |
B． |
the; / |
C． |
an; the |
D． |
the; a |